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US20140124453 CHEMICAL CO-PRECIPITATION PROCESS FOR RECOVERY OF FLOW-BACK WATER, PRODUCED WATER AND WASTEWATER OF SIMILAR CHARACTERISTICS  
Methods and systems for treating contaminated flow-back water produced by hydraulic fracture are provided. The method involves precipitating metals from the flow-back water stream in a first...
US20150232356 REMEDIATION AND RECYCLING OF FRAC WATER AND FLOW BACK WATER  
A method and device for treating contaminated water where the device is portable. The method includes the steps of moving contaminated water into a first tank to settle out large solids such as...
US20100051555 Process of removal of arsenic from water  
An arsenic removal process where arsenic 3 is oxidized to arsenic 5 where the water is passed upflow through a bed of manganese dioxide (MnO2) at a sufficient flow rate such that the MnO2 bed is...
US20110204000 METHOD FOR REMOVING SELENIUM FROM WATER  
There is provided a method for removing selenium from an aqueous influent, comprising: adding a water-soluble reducing agent to an aqueous influent containing an oxidized selenium compound (Sex,...
US20130341283 METHOD FOR PRODUCING A POORLY SOLUBLE CALCIUM-ARSENIC COMPOUND  
The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is...
US20110293506 METHOD FOR PROCESSING WASTE WATER CONTAINING FLUORINE AND SILICON, METHOD FOR PRODUCING CALCIUM FLUORIDE, AND FACILITY FOR PROCESSING FLUORINE-CONTAINING WASTE WATER  
An object (first object) of the invention is to provide a waste water treatment technology (pretreatment technology in particular) which makes it possible to recover fluorine at a high recovery...
US20150041404 TREATMENT OF ACID MINE DRAINAGE  
A method for treating acid mine drainage includes mixing acid mine drainage (20) and alkaline tailings from a gold recovery process (140). The acid mine drainage is thereby neutralized (12).
US20140263079 Wastewater Treatment System and Method  
The present invention relates to systems and methods of wastewater treatment that rely primarily on the use of water treatment chemicals to clean wastewater without the need to use filtration...
US20150129507 TREATMENT OF ARSENIC CONTAMINATED SOIL AND WATER  
The present invention is directed to a method for the treatment of an environmental medium contaminated with arsenic, comprising treating such medium with an effective amount of persulfate and...
US20140144844 METHOD AND APPARATUS FOR TREATING NATURAL GAS AND OIL WELL DRILLING WASTE WATER  
A method of treating contaminated water effluent from a well drilling operation. The method comprises decomposing organic contaminants in the effluent by bubbling a gas containing ozone through...
US20140144845 METHOD FOR WATER TREATMENT REGENERATION STAGE  
Embodiments of the invention provide a method and system for providing a regeneration stage in a water treatment system. The method can include entering a first air bleed state to allow...
US20110259872 NTC/PTC HEATING PAD  
A controllable heating pad, having a heating conductor embedded in the heating pad, a sensing conductor embedded in the heating pad, a resistive material providing a distributed electrical path...
US20120175314 METHODS OF SYNTHESIZING AN OXIDANT AND APPLICATIONS THEREOF  
Novel devices for synthesizing ferrate and uses thereof are described. One aspect of the invention relates to devices and systems for synthesizing ferrate at a site proximal to the site of use.
US20110220571 METHOD OF MAKING AND USING ADSORBENT TO REMOVE HEAVY METAL FROM WASTE WATER  
The present disclosure describes using the naturally present dissolved chemicals as precipitants from local water sources to form an adsorbent. The adsorbent may be collected and used at the right...
US20100185039 METHOD FOR EXTRACTION AND SURFACTANT ENHANCED SUBSURFACE CONTAMINANT RECOVERY  
Methods and compositions for removing contaminants from soil and groundwater by extracting the contaminants and assisting the extraction by provision of an oxidant introduced prior to or...
US20130270189 TREATMENT OF CONTAMINATED IMPOUND WATER  
Systems and methods for treating contaminated impound water are disclosed which include a pretreatment stage wherein contaminated water is oxidized, pH adjusted, treated with a coagulant, and...
US20100044317 WATER PURIFICATION DEVICE FOR ARSENIC REMOVAL  
Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3...
US20150151989 System for Purifying Polluted Water and Purification Method  
It comprises at least one first lower main deposit (1) arranged at a lower level and at least one second upper main deposit (2) arranged at an upper level, both containing polluted water to be...
US20140251904 VORTEX DIODES AS EFFLUENT TREATMENT DEVICES  
The present invention discloses device that can generate a strong vortex in the vortex chamber which significantly enhances rate of reactions and effectiveness of waste water treatment. The...
US20110220585 METHOD INTEGRATING ELECTROCHEMICAL OXIDATION AND FLOCCULATION PROCESSES FOR PRE-TREATMENT OF COKING WASTEWATER  
A new method that integrates electrochemical oxidation and flocculation processes for removing ammonia nitrogen in coking wastewater is disclosed in this invention. It comprises steps as follow:...
US20130161263 ENHANCED ADVANCED OXIDATION PROCEDURE  
An advanced oxidation procedure for treating solution waste water, comprising: applying an ultrasound-Fenton reaction, wherein said ultrasound-Fenton reaction includes: providing oxidants and at...
US20120244052 FLOCCULATION AGENTS FOR NANOPARTICLE POLLUTANTS  
The present technology relates to compositions comprising a copolymer comprising a poly(C2-4 alkylene oxide) and a cationic polyacrylamide, and a plurality of nanoparticles of titanium dioxide,...
US20120118831 PROCESS FOR ENHANCED REMEDIATION OF CONTAMINATED WASTEWATERS, SOILS AND WASTEFORMS  
The present invention provides reagents that may be useful for treating wastes such as impure aqueous materials including wastewater to remove a significant proportion of the heavy metals that may...
US20080116143 Liquid Filter and Methods of Removing Contaminants  
Filtration of water to provide cleansed water, using an assembly that monitors the volume of water cleansed and back-flushes the filtration media based on that volume. The assembly includes a...
US20140374104 COMPOSITION AND METHOD FOR TREATING OILFIELD WATER  
A method for reducing sulfide in oilfield waste water includes contacting oilfield waste water with an oxidizer in the presence of an iron catalyst. The oilfield waste water includes sulfide that...
US20130319939 Modular Precipitation and Oxidized Water Treatment  
A modular system for reclamation of a fluid includes a cavitation reactor operative to mechanically oxide the fluid and an ion precipitation system that receives the oxidized fluid from the...
US20130284678 METHODS AND DEVICES FOR MEASURING THE CONCENTRATION OF AN ADDITIVE  
An apparatus and methods for measuring the concentration of an additive are disclosed. The apparatus comprises a treatment stream (1) and a dosing stream (2). An additive is added to the dosing...
US20120193295 METHOD FOR TREATING EFFLUENT WATERS  
A process for treating waste water, effluent streams, e.g., acid mine drainage, containing heavy metals and soluble contaminants is provided. In one embodiment, at least a metal cation is added to...
US20120261342 PROCESS FOR IMPROVING THE PRECIPITATION OF CALCIUM AND/OR MAGNESIUM SALTS IN THE REGENERATION OF USED ALKALINE CLEANING SOLUTION  
A process for improving the precipitation of calcium and/or magnesium salts in the regeneration of a used alkaline cleaning solution includes the steps of providing a spent alkaline or acidic...
US20140151296 PRODUCED WATER TREATMENT TO REMOVE ORGANIC COMPOUNDS  
Systems and methods for removing organic contaminants from water may be used, for example, to treat produced water from a steam assisted heavy oil recovery operation. The treated produced water...
US20100102007 Process for Treatment of Sewage Waste Water  
This is a reliable cost-effective adsorption based method for removing the dissolved and suspended organic matter by adding a natural “flocculent sorption particles” which is (Sodium, Calcium,...
US20120006755 PROCESS FOR TREATMENT OF WATER CONTAINING AZOLE-TYPE ANTICORROSIVE FOR COPPER  
Provided is a process for efficiently removing an azole-type anticorrosive for copper from water containing the azole-type anticorrosive for copper, such as wastewater discharged from a CMP step...
US20120292259 SYSTEM AND METHOD FOR TREATMENT OF PRODUCED WATERS CONTAINING GEL  
This disclosure describes novel systems and methods for removing gel from flowback water. The methods and systems include treating acidified flowback water with aluminum chlorohydrate.
US20110100839 Generation of Chemical Reagents for Various Process Functions Utilizing an Agitated Liquid and Electrically Conductive Environment and an Electro Chemical Cell  
The disclosure teaches an apparatus for circulating electrically conductive solutions between electro-chemical cells. The apparatus is able to decrease the size or surface area of the cells and...
US20150013987 METHOD FOR REDUCING SULFIDE IN OILFIELD WASTE WATER AND MAKING TREATED WATER  
A process for treating oilfield waste water includes contacting the oilfield waste water with hydrogen peroxide, the oilfield waste water comprising sulfide; oxidizing the sulfide to sulfur; and...
US20120241387 ADVANCED OXIDATION OF KINETIC HYDRATE INHIBITORS  
Advanced oxidation process namely ozonation and Fenton's (hydrogen peroxide/Fe:2+) were utilized to degrade kinetic hydrate inhibitor (KHI). The oxidized solution after scavenging oxygen can be...
US20080023407 Water Treatment Process  
A method of purifying water or wastewater that comprises the steps of adding a treatment agent to the water, passing the water through a mixing zone, and passing the water through a foam...
US20140246375 Electrochemical-based reactor for the removal of free cyanides and iron cyanide from industrial wastewater  
The present invention relates to a continuous bipolar electrochemically based reactor for the purpose of destroying free cyanide by direct and indirect oxidation and removing its strong complexes...
US20140363364 METHOD AND SYSTEM FOR PURIFICATION OF PRODUCED WATER  
The present invention relates to a method for purification of produced water and to a system for carrying out the inventive method. Further, the invention relates to a purified produced water...
US20060283805 Advanced separator system  
A method for the remediation of contaminated liquid stream wherein liquid is passed through a reactor loop before entering tank and reactor loop is a series of conduits with internal baffles with...
US20130153509 WASTEWATER TREATMENT COMPRISING ELECTRODISSOLUTION, FLOCCULATION AND OXIDATION  
The present invention claims a process to reduce COD, TOC, and total solids from a contaminated liquid medium, which comprises of the following stages: feed an electrolytic cell provided with...
US20070056913 PORTABLE OIL FIELD WASTE WATER TREATMENT AND RECYCLING SYSTEM  
A method is shown for treating oil field waste waters associated with drilling, completion and production operations. An ozonation process is used as a pre-treatment to a flocculation process in...
US20110006012 Method for Decomposing Oil and Other Organic Insoluble and Semi-Soluble Liquids in an Aqueous Medium  
A method of decomposing an organic liquid, having a solubility in water of 0 or less than 50 g/l at 25° C., comprising: a) emulsifying an amount of the organic liquid in an amount of an aqueous...
US20140151301 METHOD FOR TREATING ARSENIC-CONTAINING AQUEOUS SOLUTION  
Provided is a method for treating an arsenic-containing aqueous solution by water treatment employing a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and...
US20070007214 Mixing chamber  
A membrane module (5) including a plurality of porous membranes (6) extending in an array and mounted, at least at one end, in a header (8). The header (8) has a number of distribution apertures...
US20110000854 USE OF A DUAL POLYMER SYSTEM FOR ENHANCED WATER RECOVERY AND IMPROVED SEPARATION OF SUSPENDED SOLIDS AND OTHER SUBSTANCES FROM AN AQUEOUS MEDIA  
A method uses anionic and cationic polymers added in, any order or simultaneously, to aqueous media for the removal of substances. The sequential addition of the two biopolymers, anionic xanthan,...
US20100320147 Reactor tank  
Disclosed is an improved water treatment cavitation reactor cone. The tank operates on a continuous flow of fluids which are subjected to ultrasonic waves in combination with a high level of...
US20120241386 MULTI-FUNCTION WATER TREATMENT  
The present invention relates to processes, methods, apparatuses, and systems for multi-function water treatment to condition feed water from various sources. The multi-function treatment includes...
US20110247986 RECLAMATION OF FORMATE BRINES  
A method of reclaiming a formate brine that includes increasing the pH of a spent formate brine fluid comprising water-soluble polymers; treating the fluid with an oxidizing agent; and removing at...
US20050098504 Oil and gas well fracturing (frac) water treatment process  
This invention relates to a novel process for treating and removing undesirable impurities from oil and gas well fracturing fluid. A method for treating fracturing water comprising: (a) passing...

Matches 1 - 50 out of 81 1 2 >